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Finding the Fourth Proportional to 7,233.48, 9,981.90 and 4,089.78

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Solution

The fourth proportional to 7,233.48, 9,981.90 and 4,089.78 is: 5,643.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,233.48 : 9,981.90 = 4,089.78 : x
  2. Step 2: Convert to fraction form
    7,233.48/9,981.90 = 4,089.78/x
  3. Step 3: Cross multiply
    7,233.48x = 9,981.90 × 4,089.78
  4. Step 4: Simplify right side
    7,233.48x = 40,823,774.98
  5. Step 5: Solve for x
    x = 40,823,774.98/7,233.48
  6. Step 6: Final answer
    x = 5,643.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.